The invention discloses a seamless switching method for enhancing stable operation under a micro-grid main network fault, and relates to the technical field of micro-
grid management, and the method comprises the steps: obtaining the
voltage, current, frequency and phase of each node of a micro-grid, judging the operation state of a main
power grid through combined collection, and obtaining the electrical parameter information of a plurality of set position monitoring devices at the same time; 2, aligning the electrical parameters obtained in the step 1 according to a unified time reference, judging the
response time difference of each monitoring device to a fault event, and selecting a node where the monitoring device is located as a main control node according to a preset rule; and the main control node sends a control instruction to the auxiliary control node, and the auxiliary control node is switched to an auxiliary control state according to a preset priority after receiving the control instruction. According to the invention, rapid and stable switching of a micro-grid control structure can be realized under the condition that a main
power grid has a fault, and the output consistency of each control node is ensured through coordinated adjustment of
voltage, frequency and active power, so that the continuity and stability of
system operation are maintained.